package filter;

import entity.User;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import java.io.IOException;
@WebFilter("/admin/*")
public class LoginCheckFileter implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest request = (HttpServletRequest) servletRequest;
        HttpSession session = request.getSession();
        User user = (User) session.getAttribute("user");
        if (user != null) {
            filterChain.doFilter(request, servletResponse);
        }{
            request.getRequestDispatcher("/login.html").forward(servletRequest, servletResponse);
        }
    }

    @Override
    public void destroy() {

    }
}
